ABAP for Webdynpro Portal Navigation dosn't work

I have a Problem.
I work with ABAP for Webdynpro.
I tried Navigation with absolute, relative and object based. With the java test tools in my Portal it works fine, but with Abap Component not.
My Portal Version is 6.0.11.0.0
the J2EE Engine 6.40 PatchLevel 89291.313
I can not navigate with this code
call method l_portal_manager->navigate_absolute
exporting
    navigation_target   = 'ROLES://portal_content/OGSDID/AuftragID'
    navigation_mode     = if_wd_portal_integration=>co_show_external
   WINDOW_FEATURES     =
   WINDOW_NAME         =
   HISTORY_MODE        = IF_WD_PORTAL_INTEGRATION=>CO_NO_DUPLICATES
   TARGET_TITLE        =
    context_url         = 'http://icosapv01:56000/irj/portal'
   POST_PARAMETERS     = ABAP_FALSE
   USE_SAP_LAUNCHER    = ABAP_TRUE
   BUSINESS_PARAMETERS =
   LAUNCHER_PARAMETERS =
It is the same code as in the test Component and it also dosn't work.
When i test the absolut navigation_target string with the support apllication from the portal it works, but i that it is a Java Webdypro.
Has anyone a Idea??
Thanks for all suggestions.
Marlies

I have found the error. See Note 945516
The url must the following form
http://icosapv01.domain.de:56000/irj/portal
my wrong Url http://icosapv01:56000/irj/portal

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Title was edited by:
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<b><REMOVED BY MODERATOR></b>
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